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A207776 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 0 vertically 1
21, 441, 972, 7164, 43264, 195160, 1246206, 7381202, 35627804, 220514498, 1274712127, 6417933773, 38976638418, 221650017452, 1149943284883, 6878942092623, 38712906007620, 205352839927648, 1212860472464769 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A207774

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..0..0..1..1....0..1..1..0....0..1..0..1....0..0..1..0....1..0..0..1

..1..1..0..0....1..1..0..0....1..0..0..1....1..0..1..0....1..1..0..1

..1..1..0..0....1..1..0..0....1..1..0..1....1..0..1..0....1..1..0..0

..0..1..0..0....0..1..0..0....1..1..0..1....0..0..1..0....0..1..0..1

..0..1..0..0....1..1..0..0....1..1..0..1....0..0..1..0....1..0..0..1

..0..1..0..0....1..1..0..0....0..1..0..0....0..0..1..0....1..0..0..1

CROSSREFS

Sequence in context: A218840 A171326 A092499 * A207273 A207766 A207733

Adjacent sequences:  A207773 A207774 A207775 * A207777 A207778 A207779

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 20 2012

STATUS

approved

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Last modified November 27 20:49 EST 2021. Contains 349395 sequences. (Running on oeis4.)